| Title | Effect of AlN Substitutions on the Oxidation Behavior of ZrB2-SiC Composites at 1600 degrees C |
| Publication Type | Journal Article |
| Year of Publication | 2016 |
| Authors | Ouyang, GY, Ray, PK, Kramer, MJ, Akinc, M |
| Journal | Journal of the American Ceramic Society |
| Volume | 99 |
| Pagination | 3389-3397 |
| Date Published | 10 |
| Type of Article | Article |
| ISBN Number | 0002-7820 |
| Accession Number | WOS:000387223200032 |
| Keywords | aln, convection, diboride-silicon carbide, evolution, high-temperature ceramics, liquids, Materials Science, Microstructure, oxidation, oxide-films, SiC, sic content, sintering aid, UHTC, viscosity, zrb2 |
| Abstract | = 10 vol%) were found to result in marginal improvement in the oxidation resistance, whereas larger amounts resulted in a significant deterioration. The size of ZrO2 clusters formed on the oxidized surface was found to be a function of the AlN content. This effect was more pronounced after longer oxidation times (similar to 1 h) as opposed to shorter durations (similar to 5 min). It was postulated that presence of AlN results in the formation of Al2O3 during the oxidation process, subsequently resulting in a lowering of viscosity of the glassy silica scale, which facilitates the coarsening of ZrO2 clusters. This also increases oxygen permeation through the scale which adversely affects the oxidation resistance of the high AlN content composites. |
| DOI | 10.1111/jace.14345 |
| Custom 1 | Not AL |
| Short Title | J. Am. Ceram. Soc. |
| Alternate Journal | J. Am. Ceram. Soc. |
